Motor.



No. 744,899. PATENTED NOV. 24, 1903. T. BUCHANAN.

MOTOR.

APPLICATION FILED JAN. 12, 1903.

N0 MODEL. 7 3 SHEETS-SHEET 1.

8 F C L" d1? I "F Q d7 OZ 4 01 l/VI/E/VTOH ThomasBuaZzmzan ATTORNEYS No. 244.899. PATENTED NOV. 24, 1903 T. BUCHANAN. MOTOR.

APPLICATION FILED JAN. 12, 1903.

N0 MODEL.

3 SHEETSSHEET .2.

' ATTORNEYS PATENTBD NOV. 24, 1903.

T. BUCHANAN.

MOTOR.

APPLICATION FILED JAN. 12, 1903.

3 SHEETS-SHEET 3.

N0 MODEL.

INVf/VTOR 7Zmms$zzc7mrzam ATTORNE ys WITNESSES 6% jiatented November 24, 1903.

UNITED STATES PATENT trier,

THOMAS BUCHANAN, OF NEWOASTLE-UPON-TYNE, ENGLAND.

MOTOR.

.-1ECIrICATION forming part of Letters Patent No. 744,899, dated November 24, 1903.

Application filed January 12, 1903. Serial No. 138,598. (No modelJ To all whom it may concern:

Be it known that I, THOMAS BUCHANAN, a subject of the King of Great Britain, residing at Neweastle-upon-Tyne, England, have invcn ted certain new and useful Improvements in Motors, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

Theobject of this invention is to provide an improved motor designed to be operated by water, steam, or other liquid pressure, and

which is designed to serve as a pump, powerengine, or similar apparatus, and with this and other objects in view the invention conline 4: at of Fig. 2; Fig. 5, a section on the line 5 of Fig. 1; and Fig. 6, aperspective view of a detail of the apparatus, on an enlarged scale.

In the drawings forming part of this specifloat-ion I have shown a base-plate or plat form a, upon which are mounted two cylinders Z) and c, which are connected by means of a pipe cl, which is provided with a central feed-pipe d and exhaust-pipes d and 61*, which pass into and connect with two valvecasings d and d respectively, within which are mounted three-way valves d and d each of which is provided at its top with a crankarm d.

iVithin each of the cylinders b and c is a tubular piston b and 0 respectively, the piston-rods b and c of which pass out of the cylinders and connect with cross-heads b and 0 respectively.

Mounted upon supports e, placed at opposite sides of the platform a, is a shaft 6 provided with oppositely-arranged cranks e and e at the ends thereof, and the cranks e and e are connected by means of connecting-rods e and c with the cross-heads b and c respectiv'ely, and by means of this arrangement of the cranks e and e reciprocating motion of the pistons 19 and c is obtained. The shaft 6 rests in bearings 6 mounted on the supports e, and I also provide a band-wheel e securely mounted upon the shaft 6 The cross-heads b and c are each provided with an arm f, which is slidably mounted in brackets f secured to the supports e.

Secured to the cylinder band near the top thereof is an arm g, which extends over the central portion of the pipe (Z, and to the end of which is pivoted a block g which carries a lever 9 the ends of which engage with pins g secured to the ends of the crank-arms d", the object of which construction is that when the crank-arm on one side is operated in one direction the crank-arm on the other side is also operated, but in an opposite direction.

Connected with the pin 9 of the crank-arm d of the valve (1 is a rod h, which is pivoted to the upper end of a lever 7L2, mounted on an upright support ha, and pivoted to the lower end of the lever 7L2 is a supplemental rod 7%, WlllOlllS also pivotally secured at its other end to an operating-bar 7L5, pivoted to the support 6 at h, and the upper end of the opcrating-bar 7L5 is preferably curved, as shown at. 71/7, Fig. at, so as to permit of greater movement adjacent to the shaft 6 Secured to the shaft e adjacent to the op crating-bar h" are two collars i and 1 which carry fingers t and 2' respectively, the finger i being preferably longer than the finger t and the operating-bar h is also provided with projecting members i and t the upper one of which, i, is adapted to be operated by the finger i and the lower one of which is adapted to be operated by the finger i and by means of this arrangement when the shaft 6 is revolving the operating-bar 7L5 is being drawn toward said shaft in a partial revolution thereof and forced away from the same in completing the revolution, thereby reversing the position of the valves (1 and d in each half-revolution of the shaft (2 The valve 61 is shown in Fig. 5 as connecting the cylinder 0 with the exhaust d while the valve d connects the pipe 01 and feedpipe d with the cylinder 1), and when the crank-arms d are operated the positions of said valves are reversed and the'feed-pipe connection is made with the cylinder 0 and the 2Xl12tll$t connection made with the cylinder When the water, steam, or other motive agent enters the feed-pipe (1 as shown in Fig. 5, it passes through the pipe d, valve 61 and into the cylinder 19, thereby forcing the piston 19 to its full stroke and operating the shaft 6 and when the shaft is in this position the finger i engages with the projection 2' of the operating-bar 71, and the top of said bar is brought toward the shaft, thereby changing the position of the valves 61 and (Z and the motive agent is then free to enter the cylinder 0, and when the piston c is forced forwardly the piston 19 is forced backwardly, thereby expelling the motive agent through the exhaust-pipe d and when the pistons are in the last-named positions the finger 2' engages the projection 1; of the operating-bar 71,

and the positions of the valves are again reversed into that shown in Fig. 5, and this operation is repeated as long as the water, steam, or other agent is allowed to enter the feedpipe (Z If power be applied to the band-wheel e and the feed-pipe d be connected with asupply of water, the operation herein described will be reversed and the motor would act as a pump.

It will be evident that various changes in and modifications of the apparatus as herein shown and described may be made, and I reserve the right to make such alterations within the scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In an apparatus of the class described, a frame or support, cylinders mounted thereover, a communication pipe connecting said cylinders, a supply pipe communicating therewith centrally thereof, exhaust-pipes communicating therewith between the cylinders and the supply-pipe, three-way valves controlling the communication between the exhaust-pipes and the first-named pipe, a main shaft, pistons placed in said cylinder and geared in connection with cranks on the main shaft,a horizontally-mounted pivoted lever in operative connection with cranks connected with said valves, an upright lever mounted on said support, a rod connecting the upper end of said uprightlever with one end of said horizontal lever, a supplemental upright lever on said support adjacent to said main shaft and connected at the bottom with said first-n amed upright lever, oppositely-directed projections on said last-named upright lever and fingers on said main shaft adapted to engage said projections and swing the said horizontal lever, substantially as shown and de-' scribed.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing Witnesses, this 22d day of December, 1902.

THOMAS BUCHANAN.

Witnesses:

GEO. CALcIoH, W. TAYLOR. 

